Model comparison
Grok 3 vs Muse Spark 1.3
Muse Spark 1.3 is the stronger model overall, scoring 54.8 to 39.9 on the Noometry Index.
Last verified . 20 shared benchmarks.
MetaSummary
- They share 20 benchmarks with published results for both. Grok 3 scores higher in 1 category and Muse Spark 1.3 in 8 categories; 9 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Muse Spark 1.3 leads 54.0 to 13.7.
- The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 55.6% for Grok 3 and 99.2% for Muse Spark 1.3.
Side by side
| Grok 3 | Muse Spark 1.3 | |
|---|---|---|
| Provider | xAI | Meta |
| Noometry Index | 39.9 | 54.8 |
| Released | 2025-04-09 | 2026-09-02 |
| Weights | Proprietary | Proprietary |
| Context window | — | 1.05M |
| Max output | — | 131K |
| Input $ / M tokens | — | $1.25 |
| Output $ / M tokens | — | $4.25 |
| Results tracked | 40 | 37 |
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Category by category
Coding Muse Spark 1.3 leads
Grok 3: 41.9 (#115), Muse Spark 1.3: 56.6 (#21)
| Benchmark | Grok 3 | Muse Spark 1.3 |
|---|---|---|
| LMArena Coding | 1432 | 1514 |
| Aider Polyglot | 53.3% | — |
| CursorBench | — | 41.6% |
| LMArena WebDev | — | 1657 |
| SciCode | — | 59.7% |
| WeirdML | 37.2% | — |
Agentic & Tool Use Muse Spark 1.3 leads
Grok 3: 30.5 (#76), Muse Spark 1.3: 38.6 (#30)
| Benchmark | Grok 3 | Muse Spark 1.3 |
|---|---|---|
| APEX-Agents | — | 57.8% |
| BALROG | 29.5% | — |
| GDP.pdf | — | 27.6% |
Reasoning Muse Spark 1.3 leads
Grok 3: 13.7 (#333), Muse Spark 1.3: 54.0 (#27)
| Benchmark | Grok 3 | Muse Spark 1.3 |
|---|---|---|
| LMArena Hard Prompts | 1434 | 1503 |
| Epoch Capabilities Index | 138.33 | 156.75 |
| ARC-AGI-2 | 0% | — |
| SimpleBench | 36.1% | — |
| Kagi LLM Benchmark | 61.3% | — |
| NYT Connections (extended) | — | 85.1% |
| ARC-AGI-1 | 5.5% | — |
| CritPt | — | 26% |
| Chess Puzzles | — | 38% |
| Mystery Game Puzzles | — | 25% |
| DTBench | — | 96.5% |
| LMCA | — | 53.9% |
| Bench to the Future 3 | — | 0.14 |
Math Muse Spark 1.3 leads
Grok 3: 38.0 (#145), Muse Spark 1.3: 73.1 (#21)
| Benchmark | Grok 3 | Muse Spark 1.3 |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 55.6% | 99.2% |
| LMArena Math | 1391 | 1494 |
| FrontierMath (Tiers 1-3) | — | 74.4% |
| FrontierMath Tier 4 | — | 46.3% |
| ProofBench | — | 58% |
| Omni-MATH | 46.4% | — |
| MATH Level 5 | 88.7% | — |
| FrontierMath (Feb 2025 set) | 3.8% | — |
| FrontierMath Tier 4 (v1) | 0% | — |
Knowledge Grok 3 leads
Grok 3: 46.2 (#82), Muse Spark 1.3: 42.6 (#95)
| Benchmark | Grok 3 | Muse Spark 1.3 |
|---|---|---|
| LMArena Expert | 1421 | 1516 |
| GPQA Diamond | 75.8% | — |
| MMLU-Pro | 78.8% | — |
| Confabulations | 14.2% | — |
| Vectara Hallucination Rate | 5.8% | — |
| GPQA (HELM) | 65% | — |
Multimodal Not comparable
Grok 3: —, Muse Spark 1.3: 43.7 (#22)
| Benchmark | Grok 3 | Muse Spark 1.3 |
|---|---|---|
| LMArena Vision | — | 1309 |
| LMArena Document | — | 1471 |
Multilingual Muse Spark 1.3 leads
Grok 3: 52.3 (#87), Muse Spark 1.3: 57.4 (#8)
| Benchmark | Grok 3 | Muse Spark 1.3 |
|---|---|---|
| LMArena Non-English | 1410 | 1481 |
| LMArena Chinese | 1448 | 1529 |
| LMArena French | 1460 | 1524 |
| LMArena German | 1431 | 1515 |
| LMArena Japanese | 1387 | 1474 |
| LMArena Korean | 1373 | 1501 |
| LMArena Russian | 1416 | 1490 |
| LMArena Spanish | 1417 | 1490 |
Instruction Following Muse Spark 1.3 leads
Grok 3: 75.0 (#73), Muse Spark 1.3: 77.5 (#22)
| Benchmark | Grok 3 | Muse Spark 1.3 |
|---|---|---|
| LMArena Instruction Following | 1409 | 1477 |
| IFEval | 88.4% | — |
Long Context Muse Spark 1.3 leads
Grok 3: 38.7 (#192), Muse Spark 1.3: 45.6 (#32)
| Benchmark | Grok 3 | Muse Spark 1.3 |
|---|---|---|
| LMArena Longer Query | 1439 | 1488 |
| Fiction.LiveBench | 58.3% | — |
Writing & Preference Muse Spark 1.3 leads
Grok 3: 55.8 (#141), Muse Spark 1.3: 73.6 (#9)
| Benchmark | Grok 3 | Muse Spark 1.3 |
|---|---|---|
| LMArena Text | 1426 | 1490 |
| LMArena Creative Writing | 1414 | 1455 |
| EQ-Bench Creative Writing | 1186 | 1906 |
| LMArena Multi-Turn | 1425 | 1482 |
| Short-Story Creative Writing | 76.4% | — |
| WildBench | 84.9% | — |
Frequently asked questions
Is Grok 3 better than Muse Spark 1.3?
Muse Spark 1.3 is the stronger model overall, scoring 54.8 to 39.9 on the Noometry Index.
Is Grok 3 or Muse Spark 1.3 better for coding?
Muse Spark 1.3 scores higher on coding benchmarks: 56.6 versus 41.9 in the Noometry coding category.
How many benchmarks do Grok 3 and Muse Spark 1.3 share?
20 benchmarks have published results for both models. Grok 3 has 40 scored results on Noometry and Muse Spark 1.3 has 37.